Safe-lock



5 Sheets-Sheet 1.

(Model.)

A. G. BURTON-` SAFE LOCK.

. l Patented Jim.l 14, 1896. @L

www a( Y @57m/bww f f a1 5 Sheets-Sheet 2..

Patented Jan. 14, .1896.

(Model.)

A. G. BURTON, SAFE 1.00K.

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@49AM/MQW i .m W A ma CHT wir.

5 Sheets--Sheet 4.

(Model.)

A. G. BURTON. SAFE 1.00K.

Patented Jan. 14, M396.

(Model.) 5 Sheets-Sheet 5,.' A. G. BURTON.

SAFE LOGE.

No. 553,051. Patented Jan. 14, 1896.

AN DREW BYGRAHM. PHUT-UTHG. WASHINGTON U C.

UNITED STATES 'PATENT AUGUSTIIS G. BURTON, OF CHICAGO, ILLINOIS.

SAFE-LOCK.

SPECIFICATION forming part of Letters Fatent No. 553,051, dated January14, 1896.

Application filed September 2, 1889. Serial No. 322,760. (Model.)

To zi/ZZ whom it nfl/cy concern.:

Be it known that l, AUGUSTUS G. BURTON, of Chicago, inthe county of Cookand State of Illinois, have invented certain new and usetul Improvementsin Safe-Locks; and I do hereby declare that the following is a full,clear, and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

This invention relates to improvements in bolt-actuating devices forsafes and vaults of that class known as automatics or those in which thelock-bolts are cast and retracted, and locking and unlocking the safe bymeans of springs or weights located inside of the safe or vault, wherebythe bolts are actuated without the employment of any spindle passingthrough the door or other part of the safe and without any aperture inthe door or walls of the safe or vault.

The invention embraces improvements in mechanism by which the bolts arecastor retracted ot the same general character as that shown in LettersPatent No. 383,0il, granted to me May l5, 18.98, and also an improvedcontrolling devi cc for rctardin g the movement of the bolts under theaction ot' the springs of the bolt-actuating mechanism, and a novelsafety unlocking device for tripping the boltactuating mechanism in caseot' accident to the time mechanism.

The invention consists in the matters hereinafter described, and pointedout in the appended claims.A

In the accompanying drawings, illustrating` my invention, Fig. l is aview in elevation of the inner side of a safe-door, showing theboltwork, a bolt-actuating mechanism, a retarding device,and a safetyunlocking device. Fig. 2 is a sectional elevation taken upon line 2 2 ofFig. G, showing the main part or case of the bolt-actuating mechanismandthe levers thereon. Fig. 3 is an inside face view of the separatecasing which is hinged to the main casing and contains the motor forautomatically releasing the casting-springs by which the door is locked.Fig. 4 is a sectional view of the motor and ease shown in Fig. 3, takenupon line l-i of Figs. 5 and G. Fig. 5 is a horizontal section of thebolt-actuating device,

taken upon line 5 5 of Fig. 2. Fig. G is a similar section taken uponline (5 G of Fig. Q. Fig. 7 is a sectional view of the main case of thebolt-actuating mechanism, showing the actuating-springs, and taken uponline 7 7 of Figs. 5 and 6. Fig. S is adetail face view of the unlockingmechanism. Fig. E) is a sectional view of the same, taken upon line 9 9of Fig. l0. Fig. l() is a horizontal section of the same, taken uponline l0 l0 of Fig. f). Fig. ll is a detail section of the main case ofthe boltactuating device, taken upon line ll Il of Fig. 2. Fig. l2 adetail section of the retarding devices, taken upon line l2 l2 of Fig.vl. Fig. 13 illustrates a modified form of the safety unlocking device.

vIn the said drawings, A indicates a safe-door which is provided withthe usual vertical and horizontal bars or frame-pieces A' A', which arepermanently affixed to the inner face of the door and attord bearingsfor the bolts, which are indicated at B B B.

B B/ are vertical carrier-bars which are attached to the horizontalbolts B B and serve to communicate motion to said bolts from theactuating mechanism. The carrier-bar B adjacent to the outer edge of thedoor is immediately connected with or actuated by the bolt-actuatingdevices, while the carrier-bar at the opposite orhinge side of the dooris actuated from the other carrier-bar through the medium of thehorizontal connecting-bar B2, which is connected at one end with theouter carrier-bar and at its other end with one end of avertically-arranged lever B3 which is pivoted between its ends to thedoor and united by a slot-and-pin connection with the inner carrier-barin a manner common and well known. The verticalbolts B B, or those atthe top and bottom of the door, are actuated by bell-crank levers B* B4from adjacent horizontal bolts, in a well-known manner.

O indicates a metal box or case which incloses the springs or other mainparts of the bolt-actuating mechanism, and C a second case, Which islocated over or against the inner face of the case G, and which containsthe locking-motor. rlhe case C is herein shown as made of the same sizeas the main part of the case C, so that it conceals all the latterexcept the attaching flanges c 'c thereof, when viewed IOO from theinside of the door, as shown in Fig. 1. Said case C is clearly shown insection in Figs. 5 and 6 and in inside elevation in Fig. 3.

D is a sliding plate or casting located within the case C, and providedwith integral parallel parts or bars D D2 which pass through the endwall of the case adjacent to the outer carrier-bar B', and are providedat their ends with a cross-bar D3 which engages said carrier-bar. Thecrossbar D3 is connected with the carrier-bar B' by means of atransverse flange or head d upon the cross-bar which is engaged with anL-shaped plate b bolted to the outer face of the carrier-bar and havingits inwardly-bent end engaged with the inner'face of the flange d, inthe manner clearly shown in the drawings, Figs. l, 5 and G.

E is another sliding plate or casting which is located within the case Gbetween the parallel parts or bars D D2 of the plate D. Said plate Epasses through an opening in the end of the case C adjacent to thecarrierbar and is adapted to act against the plate b in such manner asto throw outwardly the carrier-bar and thereby cast the bolts when saidplate E is thrust outwardly from the case.

F F are springs interposed between the end wall c of the case adjacentto the carrier-bar and the inner end of the sliding plate D andoperating to carry or thrust said plate inwardly. Said springs F Foperate to retract the bolts and operate upon the latter through themedium of the plate D, the bars D D2, the plate b, and the carrier-bar.

G G are other springs for casting the bolts, said springs being locatedbetween a suitable abutting surface at the inner end of the plate D andthe sliding plate E. Said springs operate by their expansion to thrustthe said plate E outwardly and thereby move the bolts into position toengage the bolt-apertures of the jainb.

For economy of space and compactness of construction the springs F and Gare arranged side by side in the same vertical plane, and the bar D ofthe sliding plate D is longitudinally hollowed or recessed upon itssurface adjacent to the spring F to receive the latter, while thesliding plate E is similarly hollowed to receive the spring G, asclearly shown in Fig. ll.

H is a heavy shaft having bearings at its inner and outer ends,respectively, in the inner wall C2 and outer wall (l3 of the case C,Fig. G. Said shaft is provided inside of the case with a strong arm orwing II', the outer or free end of which is adapted to bear against therear or inner surface of the sliding plate D when said shaft H is turnedupon its axis. Said shaft II is further provided with a squared head H2,Fig. G, upon its end outside of the case C, whereby a hand-lever orwrench may be engaged with the shaft for the purpose of turnin g thesame. lVhen the sliding plate D is at the rearward or inward limit ofits movement and the springs F and G are eX- panded the arm H of theshaft I-l'. will be thrown back against the rear or end wall of thecase, While said plate D rests in Contact with or adjacent to the sideface of the said wing or arm. The purpose of the said shaft and arm orwing thereon is to compress the casting and retract-ing springs F and Gpreparatory to locking the door, and such coinpression of the springs isaccomplished by turning the shaft I-I about its axis so as to carry thefree end of the arm outwardly or forwardly and thereby press or forcethe slid! ing plate D forward.

The sliding plate E is held from forward movement at the time the springG is coinpressed by devices shown more clearly in. Figs. 2 and G, andwhich are constructed :is follows:

E is a rigid stud affixed in the front or outer face of the plate E andarranged to cxtend above the outer face of the wall CS of the case C. Asherein shown7 Figs. 2 and G, the plate E is provided with anoutwardlyextending projection e, which is liush with the outer face ofthe said wall CS and enters a notch e2 in said wall when the plate E isrctract-ed.

I is a detent which is pivoted by means of a stud 'L' to the wall C3 ofthe case C. Said detent is provided with an arm I' having a notch orshoulder 2', adapted to engage the stud E when the plate E is retracted.The said detent I is also provided with an arm I?. herein shown asarranged at right angles to the arm I, said arm I2 being adapted forengagement at its free end with a locking detent J. Said locking detentJ is pivoted upon a stud j affixed in the wall C3 and is provided withan arm J having a notch j' which engages said arm I2 of the detent I insuch inanner as to hold the detent-arm I' engaged with the stud E'. rlheengaging-surfaces of the stud E and the detent-arm I are slightlybeveled or inclined so that the pressure of the stud against the detentwill tend to disen said parts. The said arm J is shown as extended pastthe notch j and as provided at its end with a lateral projectionj2adapted to engage the arm I2 and to thereby limit the movement of thesame and of the detent I when the latter is moved to release the slidingplate E.

The detent I is provided inside of and adjacent to the shoulder t" withan inclined or camsurface i2, which is adapted to be engaged by the rearor inner surface of the stud E as the latter is moved backwardly pastthe detentarm I. Said cam-surface is so shaped that the contact of thestud therewith will rotate the said detent I about its pivot in adirection to carry the shoulder t" across or into the path of the saidstud, and said camsurface i2 is so located that the stud reaches a pointinside of and free from the shoulder t" before the outer end of the armI is swung across the path of the stud. It follows from the constructiondescribed that when the sliding plate is thrown backwardly in retractingthe IOO IIO

bolts for unlocking the safe, the contact of' the said stud E' with thecam-surface i2 operates to accomplish automatically the engagement ofthe detent with the stud. A detent provided with an arm or surfacelocated in the path of the stud for actuating the said detent in themanner described is shown and broadly claimed in said prior patent, No.383,041, hereinbefore referred to.

The locking-detent J is moved or shifted automatically into a positionfor the engage ment of the notch j with the arm I2 of the detent I bycontact ot' said arm l2 with an arm or projection upon said detent J. Asherein shown, the detent J is provided with an arm J2, upon which acts atripping device for actuating the locking-detent, and said arm I2 isprovided with a projection or spur i3, which is arranged to engage saidarm J 2in such manner as to swing the said locking-detent about itspivot and thereby bring the notch j into engagement with the said armI2, when the detent l is moved by the action of the stud E', in themanner hereinbefore described.

The interlocking surfaces of the locking-detent J and detent .I2 are soshaped that the parts will remain in engagement under the outwardpressure of the stud E' upon the detent I, so that when the parts areinterlocked and in the position shown in the drawings, Fig. 2, they willremain in this position until released by force applied to thelockingdetent to move the same. It will be clear Afrom the constructiondescribed that the sliding plate E is automatically locked or held inits retracted position when thrown baekwardly or inwardly without theuse of any springs for moving or actuating either the main detent I orthe locking-detent J.

Devices are herein shown adapted to act upon the detent J for releasingthe bolts in locking the safe, as will be hereinafter fully described.

For holding the sliding plate D at the forward limit of its movement soas to retain the casting and retracting-springs in their compressedcondition during the compression of said springs by the action of theshaft II and after the said springs have been compressed, devices areherein provided as follows:

DL is a rigid stud affixed to the sliding plate l) and extendingoutwardly through a longitudinal slotor opening c3 formed in the frontor outer wall C3 of the case C.

K is a detent-lever which is pivoted upon l a stud 7 on the wall Cs ofthe ease and is provided with a notch or shoulder Za' between itspivotal point and its free end, said notch being located in position toengage the stud DL when the sliding plate D is at the forward or outwardlimit of its movement. The engaging-surfaces of the notch Zt and thestud D4 are slightly beveled or inclined in such manner that thepressure of the stud tends to release the detent-lever therefrom. Thesaid detent-lever K isprovided with an arm or projection K7 having uponit a cam-surface 752, which is located in the path of the stud DL at thetime said lever K is unlocked or disengaged from the said stud, and isso shaped that the action of the stud thereon, as the sliding plate D isthrust outwardly or forwardly, will throw the detent-lever K toward thestud and thereby bring the shoulder 71; in the path of the stud and holdthe same from backward movement.

L is a second detent-lever, which is pivoted upon a stud Zaflixed in thewall CS of the case. Said detent-lever L is provided with an arm Lhaving a notch Z', which is adapted to engage the end of thedetent-lever K, when the latter is engaged with the stud D, and tothereby hold the detent-lever in engagement with the stud and ret-ainthe springs compressed. Said arm L is preferably extended somewhatbeyond the notch Z" and provided with a lug or projection Z2 forlimiting the outward movement of the detent-lever K. Said detent-lever Lis also provided with a second arm, L2, adapted to engage alockingdetent M, which is immediately acted upon by the time mechanism.Said locking-de- Atent M is pivoted upon a stud mr and is provided witha sliding arm M,`in the slot of which is located the bent end Z3 of theleverarm L2. Said locking-lever M is provided, adjacent to its pivotalpoint, with a notch m adapted to engage the part Z3 of the arm L2, whenthe detent-lever L is in position for engagement of the lever K with thenotch Z.

The detent-lever M is herein shown as provided with anupwardly-extending arm M adapted for engagement with the movable arm n.,Fig. l, of a time mechanism, which is indicated as a whole by N. Saidtime mechanism operates to move the said locking-detent M at apredetermined time, and thus releases the safe-detente described and theretracting-springs for opening the safe. In order that the detent-leverL may be au tomatically thrown into position to engage the detent-leverK at the time of compressing the springs, said detent-lever L isprovided with a projecting part or surface Z4, ar-

ranged approximately at right angles with the arm L and adapted toengage the end of the lever K, so that as the latter is swung in IOO IIO

position for engagement of the notch Zt with the stud D4 the free end ofthe said lever K will strike the projection or surface Z4 and therebyswing the detent L about its pivot until the notch Z engages the end ofthe said lever K. The free end of the arm L2 of said lever L in thismovement of the parts swings through the slot m2 of the looking-detent Muntil it comes opposite the shoulder mr of said locking-detent.

In said prior patent, No. 383,0il, are shown and described detent-leverswhich are constructed and operating in the same manner as thedetent-levers K and L, herein shown. A similar locking-detent foractuation by the time mechanism, illustrated in said patent, is,however, actuated by means of a spring to cause its engagement with thedetent-lever. In the present construction any such spring for actuatingthe locking-detent is dispensed with and said locking-detent is actuatedautomatically by movement of the lever-arm L3 by means as follows: Atthe upper or inner end of the slot m2 is formed a cam-surface m4arranged in the path of the part Z3 of said lever-arin L2, saidcam-surface being so shaped as to swing or throw the locking-detent :ina direction to carry the shouldei1 m thereof into engagement with thesaid part 3. In this construction, therefore, not only are thedetent-levers K and L, but also the locking detent M, actuated directlyor positively by the power obtained in moving the sliding plate D forsetting the lock without reliance upon the use of springs to accomplishthe interlocking of any of said parts.

In said prior patent, No. 383,0il, and also in another patent, No.383,0i0, I have shown and described a spring-motor applied to actuatethe locking-detent which holds the casting-springs from moving thebolts, in which the actuating-spring of the motor is wound or compressedby the same act by which the actuating-springs for the bolts arecompressed or wound. A similar spring-motor is herein shown, but the oneherein illustrated embodies certain features of novelty which areclaimed as part of this invention. The motor for actuating thelocking-detent is Vin this instance mounted in the shell or casing C',hereinbefore mentioned, which is located over or against the inner faceor wall C3 of the main case C. For convenience in obtaining access tothe several parts located upon the said case C, in the manner abovedescribed, the case C is pivotally connected with the case C at one endby means of pivots c4 c4, Figs. 2, 5 and G, a suitable spring-catch c5being employed to h'old the opposite or free end ofthe case C againstthe case C. The said case C thus forms, in one sense, a hinged cover forthe protection of the several detent-levers on the case C but said caseC at the same time contains the motor by which the bolts are releasedfor locking the safe. The main operative parts of said motor are moreclearly shown in Figs. 3, i, 5 and (i, and are made as follows:

P, Figs. 4, 5 and 6, indicates a train of gears which may consist of anydesired manner of wheels and pinions arranged to intermesh in the usualmanner.

P is the main or driving shaft of the train upon which is mounted ania-in or driving wheel p. Said driving-wheel is connected with theshaft by a backing-ratchet P2 arranged to engage spring-pawls P3 uponthe main wheel p.

p p2 p3 are intermediate arbors or shafts of the train of gears, and Qis a shaft provided with a pinion q, which is driven from the gear-wheelp4 of the most rapidly-driven arbor p3. Said shaft Q is provided withsome suitable speed-regulating device. As herein shown, said shaftextends through the inner wall C4 of the case C into an annular box orchamber Q, Fig. 3, within which is placed friction-weights carried byspring-arms upon the shaft, in the manner fully illustrated anddescribed in said prior patent, No. 383,040.

The priine-mover employed in the instance illustrated for actuating thetrain of gears is a coiled spring R arranged to act by expansion upon asliding rack R which intermeshes with a pinion P4 aiiixed to the mainshaft P of the train. The rack R is conveniently held in position andguided by means of a longitudinal slot r therein, engaging a stud r uponthe outer wall of the case C. The spring R is conveniently placed arounda rod or plunger R2, which is attached at one end to the rack-bar R.Said rod R2 slides at its outer end in a guide-aperture s formed in anoutwardly-bent arm S of a sliding plate S which is located upon theinner face of the said wall C4, the arm S passing through a slot c6 insaid wall in the manner illustrated, Figs. 3 and 5. Said sliding plate Sis held in guides S2 S2 affixed to the said plate O4, Fig. The spring Ris located between the said arm S and the end of the rack-bar R, andacts by its expansion to move said rack-bar in a direction away fromsaid arm S. The said plate S is provided with an aperture s adapted tofit over and engage the stud Di on the sliding plate D, which isactuated by the retracting-springs G.

`When the several bolt-actuating springs are expanded, the plate D is atthe rearward or inward limit of its movement and the spring R is alsoexpanded and the rack-bar R is at the rearward limit of its movement,the plate S will stand in position to engage the said stud D4, and,supposing the case C at this time to be swung open or away from the caseC, if said case C' is closed against the said case C the said stud Blwill enter and become engaged with the aperture s of said plate S. Ifwhen the parts are in this position the plate D is thrown forward tocompress the bolt-actuating springs the plate S will be carried forwardtherewith, thereby compressing the motor-spring R between the arm S andthe end of the rack. The plunger and rack of course remain stationary inthis movement of the arm S, which latter slides over the said plunger.After the spring R has been compressed in the manner described saidspring will obviously tend to carry forward the rack R, but said rackbeing in mesh with the driving-pinion of the gear-train will beprevented from moving forward at a speed greater than will be allowed bythe turning of the train of gears and the regulating device thereof. Itfollows that the said spring R will expand slowly after the plate D hasbeen moved forward, and that the main shaft p', which is actuated by therack-bar, will be slowly rotated by the action of the spring IOO IIO

follows: In the outer end of the arm J2 of said locking-detect islocated a pi n or stnd'jS, which extends outwardly from said arm or in adirection toward the adjacent face ot' theinner wall CL ofthemotor-case, as clearly shown in Fig. 5. The main shaft p of themotor-train is extended through the said plate (L4 so as to come withinthe space between said plate Cl and the adjacent plate C3 of the ina-incase C, and is provided on its projecting end with a crank-arm P5arranged in position to engage with the stud when the shaft p isrevolved. Said shaft is turned in such direction that the crank-arm Vp5will act against the stud js in a manner to swing the arm j of thelocking-detent outwardly or away from the arm l2 of the detent l, andthereby release the latter. The parts are so arranged that the shaft p'will make only a part ot a revolution during the expansion of themotor-spring, and the crankarm pf will stand at a considerable angulardistance from the stud after the spring is compressed, so that thecrank-arm will not engage the stud until the motor-spring has reachedthe limit of its expansion, or nearly so. rl"he crank-arm may bearranged to turnl through a greater or less distance before it strikesthe said stud, in accordance with the time which it is desired shouldelapse between the compressing of the main springs and the casting ofthe bolts, sufficient time being allowed in any instance to enable thesafe-door to be fully closed and placed in position for .the casting ofthe bolts before the said crankarin strikes the stud and therebyreleases the casting-springs.

One im portant advantage gained by the features of constructiondescribed, wherein the locking-motor is located in a separate caseattached to the inner face of the main case of the bolt-actuatingdevice, is that the parts of the lock are therebyr brought in a morecompact form and into a form to occupi7 a small space on the face of thedoor, so that the automatic device maybe applied to small doors in whicha greater part of the surface of the door is occn pied bythe bolts andcarrier-bars- The squared end H2 of the actuating-shaft ll is preferablyterminated inside of the outer wall oi the case C', and the latter isprovided with an aperture C, Figs. 3 and 6, through which the wrench orother implement may be inserted to engage with the squared end of theshaft.

For holding ho train ot' gears temporarily from movement, in case thedoor is not immediately closed after the springs are compressed, adei'ent or locking device is preferably arranged to act on one of themoving parts of the train of gears. Such locking device, as hereinshown, consists of a sliding plate Q2 provided with a spring-arm adaptedto bear on the pinion q, to hold the same from turning when the plate isshifted to bring the said arm into contact with said pinion.

The operation of the bolt-actuating devices constructed as abovedescribed is generally the same as that set forth in said prior patentshereinbefore referred to. Then the safedoor is opened after theretraction of the bolts, the sliding plate D will stand at the inwardlimit of its movement and the sliding plate E will be similarly located,while the stud E' on the plate E will be engaged with the detent l. Thecarrier-bar at such time will be retracted and the plate h will standadjacent to the lock-case and in contact with the end of the plate E,and will at the same time be engaged with the plate D. Then setting thedevice for operation, prior to closing the door, the shaft H Will beactuated to throw forward the plate D, thereby compressing both sets ofsprings, the plate E being held from movement by the detent l. When theplate D has reached the forward limit of its movement the stuthDY1thereof engages with the detentlever K and the latter is locked so as tohold the plate D from backward or inward movement under the action ofthe springs F. The iiange d of said plate D is, in the advance movementof said plate, carried away from the plate Z9 of the carrier-bar. "Whenthe main springs are compressed the spring of the locking-motor is alsocompressed, in the manner hereinbefore described. As soon as the partsare set in the manner above stated the locking-motor begins to turnunless held out of action by the detent If said detent is not used thedoor is immediately closed after the springs are compressed, and shortlythereafter the locking-detent J is tripped by the crank-arm P5 of thelocking-motor. The plate E is released and, acting upon the plate Z1 andcarrier-bar, cast-s the bolts, said plate l) being carried forward intocontact with the inner face of the flange d of the plate D. At theexpiration of the time for which the time-lock is set to open the safe,said time-lock trips the locking-detent M, releases the plate D andthereby allows the springs F to expand,

bar, and the door is then unlocked.

In Figs. l and l2 I have shown a novel form of retarding device forcontrolling the movement of the bolts under the action of thebolt-actuating devices, the object of such retarding device being toprevent any shock or blow upon the parts of the door when said boltsreach the limit of their movement after being forcibly cast or retractedby the springs.

As shown in the drawings, Figs. l and-l2, N" is a segmental platemounted upon the inner face of the door by a pivot-stud n. Saidsegmental plate is provided with gear-teeth N2 at its free margin.

N3 is a rod or bar attached to the carrier- IOO IIO

,forcing backwardly the plate D and carrierbar B and provided with aninwardly-projecting stud or pin a2, which enters a slot or opening n3 inthe plate N.

O is a pinion mounted upon a stud o attached to the inner `face of thedoor and intermeshing with the gear-segment N2. Attached to saidgear-pinion O is a gear-wheel O.

O2 is a short rotating shaft mounted on the face of the door parallelwith the stud o, and provided with a pinion O3, which intermeshes withthe gear-wheel O. Said shaft O2 is located concentrically within astationary ring or hollow cylinder O", and mounted upon said shaft areradially-m ovable friction-weights o o', adapted to engage bycentrifugal action the inner surface of the ring O4, said weights andring thereby forming a regulating device to control the speed ofrotation of the said shaft. In the particular construction hereinillustrated the friction-weights o ol are conn nected with the shaftbymeans of radial pins 02 upon the weights, which enter and slide intubular arms or projections 03 upon the shaft. XVhen the carrier-bar ismoved the segmental plate N is swung or oscillated about its pivot,thereby rotating the pinion O and gearwheel O and giving rapid rotarymovement to the shaft O2, the speed of which is limited or controlled bythe regulating device. The rapidity of movement in the carrier-bar andbolts will therefore be limited or controlled in accordance with thespeed at which the segmental plate N is allowed to move by saidregulating device,A and a means is thus provided for giving a slow andgrad ual movement to the carrier-bar and bolts both when cast andretracted, so that the latter will move easily and slowly and be stoppedwithout shock or jar.

In Figs. l, 8, 9 and l0 I have shown anovel safety unlocking deviceadapted for actuating the locking-detent which holds the retracting-springs from movement, and which may be employed in case thetime mechanism should be injured or fail from any cause to perform itsduty. Said unlocking device is operated by the movement of a heavy bodywithin the safe,which body is set in motion by power applied without thesafe, as by a bodily movement of the safe itself, and which either actsby its own impetus to give power to -accomplish the unlocking of thesafe or acts to release or put in motion a driving or other motor toaccomplish the same result. In the iigures above referred to thismovable body has the form of a loose roller adapted to operate by impactwhen the safe is tilted or rocked. A pendulum or movable body otherwisesustained or supported may, however, be employed to produce the samegeneral result. It will of course be obvious, however, that an unlockingdevice of this latter kind can only be applied to safes which can bebodily moved or tilted, and are inapplicable to safe-vaults and similarstructures.

As illustrated in the iigures of the drawings referred to, T is a shellor casing secured to ,said arm.

the inner face of the safe-door at a point somewhat above and adjacentto the case C of the bolt-actuating device. T is a tube attached to saidcase T and extending outwardly from one side of the saine in ahorizontal position. For economy of space the said tube T' s hereinshown as located between the top of the bolt-actuating device and thetimedock. in the manner shown in Fig. l. Said tube l" is closed at itsouter end1 and within the tube is located a ball or roller t, preferablyof metal or some other hard and heavy substance.

U is a swinging arm mounted upon a horizontal shaft 'a within the case Tand adapted to oscillate about the shaft. The lower or free end of saidarm U is located opposite the open end of the tube T and is preferablyprovided with a lug or projection u', which enters the tube when the armis swung forward or toward the same. Afiixed upon said shaft u, is aratchet-wheely U', which is engaged by a pawl u2 mounted on the arm U.The pawl is so arranged that when the arm is thrown backwardly away fromthe tube it will engage and turn the ratchet-wheel. The said arm Lv isheld normally in position adjacent to the tube by a suitably appliedspring and is thrown backwardly against the action of the spring by theimpact of the ball 't upon its end opposite the tube when the safe istilted so as to incline the tube and cause the ball to gravitate againstThe spring for actuating the arm U may be arranged in any convenientmanner. As herein shown, a sliding plunger Ui is mounted in a cylinderor barrel T2 upon the case T in position to act at its end against thearm U. Said plunger is actuated by a spiral spring T3 located withinsaid barrel and acting upon a shoulder of the plunger.

It will be clear from the construction described that each time the safeis tilted or rocked to carry the ball endwise of the tube and intocontact with the arm U said arm will be thrown backwardly and will, byits engagement with the ratchet-wheel U', give a partial rotation to theshaft u. Said shaft a is provided with a worm a3, which engages aworm-wheel V mounted on a transverselyarranged shaft o also havingbearings in the case T, and said shaft U is provided with a worm fv,which intermeshes with a wormwheel IV on a shaft w arranged at rightangles to the shaft o. Said shaft w extends at one end through the outeror front face of the case T and is provided outside of the case with anarm WV', which turns with the shaft and is provided with a pin or stud'w'.

X is a longitudinally-sliding bar mounted in guides T4 T5 upon the caseT. Said bar is extended at one end to a point ad j acent to the arm M2of the locking-detent M and is provided with a transversely-bent partadapted to engage the said arm M2, said bent part t being arranged atthe same side of the locking-lever at which the actuating-arm of thetime-lock is located. The said bar X is further provided with a shoulderfr located in IOO IIO

IZO

position to be encountered by the'stud u?,

when the arm 'VW is revolved.

It follows from the construction that when the arm U is actuated bycontact of the balli therewith the shaft vzo will be revolved, but veryslowly, owing to the employment of the several worms and worm-wheels bywhich motion is transmitted from the shaft u to the shaft '10, so thatit will require a great many movements of the said arm U to complete asingle revolution of the shaft iff. In case the time-lock fails tooperate from any cause, if the safe is tilted or rocked Continuously fora long period of time repeated impacts or blows of the ball against theswinging arm U will finally turn the shaft 1u a sufficient distance tobring the pin ur against the shoulder zr' and thereby shift the bar Xendwise so as to trip the locking-detent and allow the opera-- tion ofthe retracting-springs and the unlocking of the safe.

I have shown two worin-shafts and wormwheels as interposed between theshaft u and the shaft u',- but it will of course be understood that anynumber of such worms and worm-wheels may be employed as is foundnecessary or desirable, depending upon the time iu which it is desiredthat the rocking of the safe shall be continued before the safety devicecomes into operation for unlocking the safe. The time will in all casesbe so great as to prevent possibility of the safe being opened in thismanner by unauthorized persons-as, for instance, the time should begreater than that during which a burglar might operate without detectionin the place in which the safe or vault is located.

In order to en able the time required for opening the safe by the safetydevice to be changed, the pin w instead of being rigidly connected withthe shaft w is made capable of angular adjustment upon said shaft bydevices constructed as follows: Rigidly attached to said shaft w outsideof the case T is a disk XW provided with peripheral ratchet-teeth wg.The arm W carrying the stud w', is mounted to turn upon the said shaftio and is provided with. a spring-pawl w3, adapted to engage theratchet-teeth '102. The face of the said disk yw2 is, furthermore,dcsirably marked with a scale or index in the manner illustrated. Saidscale or index may be conveniently marked to indicate the number ofmovements of the safe required to turn the same through a certainangular distance. The ratchetteeth of the said disk XW are so arrangedthat the arm lV will be engaged and carried forward with the disk as theshaft w is revolved, said arm lV being free to turn forwardly withreference to the disk, so that it may be set at any desired position orangle and may be placed at any point of the scale desired, according' tothe length of time necessary for safety.

The bar X may be arranged to simply slide in the bearings T'l T5; but inorder to prevent said bar from being accidentally shifted it is hereinshown as made as follows: At its end which engages the bearing T5 saidbar is provided with a shoulder m2, which is engaged with said bearingin the normal position of the bar, while a spring-arm X', attached tothe bar and engaged with a guide-aperture of the said bearing T5, holdsthe said bar upwardly in position for engagement of said shoulder withthe said bearing. The top surface of the bar adjacent to the shoulder isso arranged, furthermore, that when the stud w encounters the bar itwill force the latter downwardly a sufficient distance to free theshoulder t2 from the bearing T5 before the bar is moved endwise by theaction of said pin upon the shoulder, the opening in said bearing T5being sufficiently large to allow the bar to pass or slide through thesame when depressed by the pin, in the manner described.

In Fig. 13 I have shown another form of safety unlocking device whereina pendulum is used instead of a roller as a means of actuating theunlocking device. In this instance all the parts of the device are madeas hereinbefore described, excepting that the arm U is extendeddownwardly through the bottom of the case and is provided at its lowerend with a pendulum-weight U5, which is located within a convenientspace at the lower part of the door. Then the safe containing this formof the device is rocked or tipped the arm U will obviously turn oroscillate about the shart u, thereby actuating said shaft through themedium of the ratchet and giving motion to the revolving pin by whichthe trip-bar X is actuated, in the same manner as hereinbeforedescribed.

The employment of a safety unlocking device which is operated by thebodily movement of a weight within the safe, in the inanner described,is of great advantage inasmuch as it affords a cheap and simple way ofunlocking the safe in case of accident to the timelock.

In the use of a device of the character illustrated in Figs. 8, 9, l0and 13 the safe if of ordinary size 1n ay obviously be placed uponsupports or skids in such manner that it maybe easily rocked or tilted,so that by the employment of one or two men for a day or thereaboui's inrocking or tilting the safe thus supported the safe may be opened, whilein the case of a safe without such safety unlocking device it mightbecome necessary to practically destroy the entire safe in order toobtain access to its contents. Y

I claim as my inventionl. The combination with the bolts of a safe, anda spring for actuating the bolts, of a plate moved by the spring andactuating upon the bolts, a pivoted detent-lever K, constructed to holdsaid plate from movement, a second detent-lever L engaging the lever K,and a locking detent M, provided with a notch or shoulder engaging saiddetent-lever L, and provided also with a cam-surface located in positionto be encountered by the lever L and IOO IIO

to thereby cause the locking-detent to move into position for theengagement of the notch or shoulder thereof with the said lever L,substantially as described.

2. The combination with the bolts of a safe, and a casting spring forthe bolts, of a shell or case C inclosing said casting spring, a detentmounted on the case for holding the casting spring from moving thebolts, a locking motor for actuating said detent, and a second shell orcase, containing said locking motor, and adapted to cover the front faceof said case C When the parts are in operative position, substantiallyas described.

The combination with the bolts of a safe and a casting spring for thebolts, of a shell or ease C inclosing the casting spring, a detent onthe case for holding the spring from moving the bolts, a motor foractuating said detent, comprising a train of gears anda spring foractuating the same and a case containing the said motor located infront, of the case C and covering to the front face of said case C andthe said detent, one of the moving parts of said motor being adapted toengage and actuate the said detent for releasing the casting springs,substantially as described.

4. The combination with the bolts of a safe and a casting spring for thebolts, of a shell or ease C inclosing the casting spring, a slidingplate D which is moved in compressing the said spring. a detent holdingsaid spring from casting the bolts, a motor for actuating said detent,comprising a train of gears and a spring for actuating the same,a case Cfor said motor located over the front face of the said case C, and asliding plate S/ upon said case C', arranged to act upon the motorspring for compressing the same, and adapted to engage the saidsliding-plate D, substantially as described.

5. The combination with the bolts of a safe and a casting spring for thebolts, of a shell or case C inclosing the said spring, a sliding plateD, the movement of Which compresses the said spring, said plate D beingprovided with a stud, a detent holding the casting spring from moving'the bolts, a motor for actuating said detent, comprising an actuatingspring and a train of gears, a case C containing said motor and asliding plate S mounted on said case, and acting on the motor spring tocompress the same, said plate being provided With an aperture to receivethe stud d4, substantially as described.

C. The combination with the bolts of a safe and a casting spring for thebolts, ofa shell or case @inclosing said spring, a sliding plate D insaid case, a detent holding Jthe casting spring from movement, a motorfor actuating said detent, comprising a train of gears, a rack barintermeshing with a pinion on one of the shafts of the train, and aspiral spring acting on said rack-bar, a case C containing said motor,and a sliding plate S mounted upon the case and acting upon themotorspring, said plate S being adapted for engagement Withthe saidplate D, substantiallyv as described.

7. The combination With the bolts of a safe, and a casting spring forthe bolts, of a shell or case C inclosing said spring, a sliding plateD, the movement of which compresses the casting-spring, vsaid plate Dbeing provided With a stud D4, a detent holding the casting spring frommoving the bolts, a motor for actuating the said detent, comprising atrain of gears, a rack-bar intermesliin with a pinion on one of theshafts of the train. and a spiral spring acting on the said rack-bar. acase C containing said motor, and a sliding plate D mounted onY the saidcase and acting on the motor-spring, said plate being provided With anaperture to receive the said stud D4, substantially as described.

8. The combination With the bolts, castingspring, case C, detentthereon, and plate D provided with a stud D4, of a case C and a motorfor actuating the detent mounted in said case C', and comprising a trainof gears, a rack-bar engaging a pinion upon one ot' the shafts of thetrain, said rack-bar being provided With a stem R2, a spiral springsurrounding said stem and a sliding plate S mounted on the case andprovided with an arm engaging said stem R2 and acting on saidspiral-spring, said plate S being provided with an aperture engaging thestud D"` substantially as described.

9. The combination with the bolts of a safe, and casting and retractingsprings for the bolts, of a shell or case C inclosing said springs,sliding plates D and E Within said case, said plate D being providedwith a stud D4, a detent on the case engaging said stud D", a detent Jholding said plate E from movement, a motor for actuatingsaid detent,comprising an actuating spring and a train of gears, a case Ccontainingmsaid motor, and a sliding plate S, mounted on said case andacting en the motor spring, said plate S being provided With an apertureto receive the stud D4, substantially as described.

lO. The combination with the bolts of a safe, and casting and retractingsprings for the bolts, of a shell or case C, sliding plates D and EWithin said case, said plates being provided with studs D" and E', adetent engaging said stud D4, a detent I engaging the stud E. a detent Jengaging the detent I, a motor for actuating the said detent Jcomprising a train of gears and a spring for actuating the same, and acase containing said motor, one or' the revolving parts of the motorbeing provided with an arm adapted to engage and aetuate the detent Jand a sliding plate S mounted on the case C' and acting on the motorspring to compress the same, said plate being provided With an apertureto engage the plate being provided with an aperture to engage the studD4, substantially as described.

l1. The combination Wit-h the bolts of a safe, and actuating spring forthe bolts, of a shell or case C inclosing said spring, a detent lofmounted on the caso for holding the spring from moving the bolts, asliding plate, which is moved in compressingsaid spring, provided with astud ext-ending outside of the front Wall of the said oase C, a motorcase C located over or against the front face of the oase C and a motorlocated Within said case C', and provided adjacent to the front of thecase C, with a revolving arm adapted to engage and actuate the saiddetent on said case C, and with a sliding plate, the movement of whichwinds or compresses the motor-spring, and which is adapted to interlockwith the said stud when the oase C is closed against the case C,substantially as described.

l2. The combination with the bolts of a safe, and a spring for actuatingthe bolts, of a retarding device comprising an oscillating gearsegmentconnected and moving with the bolts, a train of gears engaged with saidgear-segment, and a speed-regulating device applied to control the speedof rotation of the said train of gears, substantially as described.

13. The combination with the bolts of a portable safe, an automatic boltactuating device anda time mechanism controlling the same, of a safetyunlocking device, comprising a tripping and releasing mechanism having arotating part or pin adapted to engage or release the bolt actuatingdevice atv one point in its path, and a heavy body or Weight movablysupported'within the safe free from contact with the Walls thereof, andwhich is free to shift its position. when the safe is bodily moved, saidheavy Weight being adapted to act by its gravity upon the tripping orreleasing mechanism to continuously actuate the same when repeatedlymoved or shifted, substantially as described.

li. The combin ation With the bolts of a safe, an automaticbolt-actuating device, and a time-mechanism controlling the same, of asafety unlocking device comprising a tripping` or releasing` mechanismto trip or release the bolt actuating device, and a heavy body, orWeight movably supported within the safe and constructed to operate orstart the tripping or releasing mechanism When moved or shifted; saidtripping or releasing mechanismbeing provided with a revolving pin orstud, and a tripping bar adapted to engage the bolt actuating device,and located in position for engagement with the said pin or stud,substantially as described.

l5. The combination with the bolts of a safe, an automatic boltactuating device, and a time-mechanism, of a safety unlocking device,comprising a heavy body or Weight movably supported Within the safe, anoscillating pivoted arm actuated by the movements of said Weight orbody, a ratchet-Wheel, a pawl on the arm engaging the ratchet-wheel,gearing actuated by said ratchet Wheel, and atrippin g bar actuated bythe said gearing, substantially' as described.

1G. The combination with the bolts of a safe, an automaticbolt-actuating device, and a time-mechanism,of asafety unlocking device,comprising a heavy body or Weight having the form of a ball or roller, away or track within the safe, supporting said ball or roller and gearingactuated by the impact of said ball or roller and adapted to act uponthe bolt act-uating device to trip the same and alloriT the retractionof the bolts, substantially as described.

17. The combination with the bolts of a safe, an automaticbolt-actuating device, and a tim e-mechanism, of a safety unlockingdevice, comprising a heavy body or Weight having the form of a ball orroller, a Way or track Within the safe, supporting said ball or roller,an oscillatin g pivoted arm actuated by the impactof said ball orroller, a ratchet Wheel, a paivl on the arm engaging the said ratchetwheel, gearing actuated by said ratchet-Wheel, and a tripping-baractuated by said gearing, substantially as described.

18. The combination with the bolts of asafe, an automatic bolt-actuatingdevice, and a time-mechan ism,of a safety unlocking device, comprising aheavy body or Weight having the form of a ball or roller, a way or trackwithin the safe, supporting said ball or roller, an 0scilla-ting pivotedarm having its free end adjacent to the end of the said track or Way, aspring applied to throiv the arm toward the track or Way, a.ratchet-Wheel, a paivl moved by the oscillating arm and engaging saidratchet-Wheel, gearing actuated by the said ratchet-wheel, and atripping bar actuated by the said gearing, substantially as described.

19. The combination with the bolts of a safe, an automatic boltactuatingdevice, and a time-mechanism of a safety unlocking device, comprising atripping or releasing device to trip or release the bolt actuatingdevice and a heavy body or weight, movably supported Within the safe,said tripping or releasing mechanism being provided With a rotatingshaft, a disk afliXed to the shaft and provided With peripheral ratchetteeth, an arm mounted on the shaft, and provided with a stud or pin, andwith a paivl engaging the said ratchet teeth and a tripping-bar actuatedby the said stud or pin, substantially as described.

20. The combination with the bolts of a safe, an automatic bolt-actuating device, and a time-mechanism,of a safety unlocking device,comprising a tripping or releasing device to trip or release thebolt-actuating device, and a heavy-body or Weight, movably supportedWithin the safe, said tripping or releasing mechanism being providedwith a rotating shaft, a revolving stud or pin carried by the saidshaft, a vertically and longitudinally movable tripping-bar, providedwith a shoulder for engagement With the stud, and a second shoulder X2to engage one of the bearings of the bar, and a spring holding the barin position for the engagement of the said shoulder X2 with the bearing,the said stud being arranged to move the bar laterally to disengage saidshoulder from the bearing before IOC) IIO

the bar is moved endwise by said stud, substantially as described.

21. The combination with the bolts of a safe, an automatic boltactuating device, and a time mechanism, of a safety unlocking devicecomprising a frame or case, a tube adjacent thereto, an oscillating armmounted in the frame or case, a ball or roller in the tube adapted toact upon the free end of the said arm, a ratchet-Wheel mounted in thecase, a pawl on the arm acting on the ratchet wheel, gearing actuated bysaid ratchet Wheel, a re-

